Deoldify Vapoursynth filter

[Dan64]

Ok, I will try to explain better.

Case: 1 & 2 are simply to understand and should be the cases more frequent.
Case: 4, I added this case to be able to quickly adjust the colored movies with the previous version of HAVC, in this case is not necessary to recolor again the clip.
Case: 3, This is a complex strategy (which requires at last a RTX 4070ti) which split the color processes in 2 steps: 
       1) in the first step will be used HAVC with Deep-Exemplar and freq=5, just to speed-up the first coloring step (BlackWhiteTune will not be used in this step);    
       2) in the second step the clip previously colored will be stabilized using ColorMNet, which provides dull colors, and will be applied BlackWhiteTune to improve the final colors 
Case: 6, is similar to case 4, but in this case  BlackWhiteTune will be applied using the process described in Case 3.2
Case: 5, is similar to 6, but in this case the stabilization parameters will be taken from the GUI.

The need to add  "B&W Restore"  is to manage the cases 3, 5, 6. In all these cases the "Exemplar Models" will be used twice with different values. 
To simplify the GUI management I proposed to add  "B&W Restore".

Dan